Kuvasz Uptime

Kuvasz is an open-source, self-hosted uptime and SSL monitoring service that helps you track availability and certificate health for websites and services. It provides a web UI, a full REST API, status pages, and integrations for metrics and notifications.

Key Features

• HTTP(S) monitoring with configurable intervals, headers, custom methods, status/keyword matching and response time checks
• SSL certificate monitoring with expiry alerts
• Per-monitor notification channels (email, Discord, Slack, Telegram, PagerDuty and webhooks) and configurable alerting
• Public and private, brandable status pages for incidents and uptime history
• Push/heartbeat monitors for cron jobs and scheduled tasks
• Full REST API for automation and management, plus YAML-based IAC support and backups
• Metrics exporters for Prometheus and OpenTelemetry to integrate with observability stacks
• Distributed as a single Docker image and uses PostgreSQL for storage

Use Cases

• Monitor website and API availability with low intervals and custom response checks
• Publish a customer-facing or internal status page to communicate incidents and maintenance windows
• Track cron/heartbeat jobs and receive notifications for missed runs or slow responses

Limitations and Considerations

• Does not natively support port checks, DNS monitoring, or domain expiration monitoring at present
• Requires a PostgreSQL database and a JVM environment (Kotlin-based backend), so plan resources for high-frequency checks
• Some notification channels and features (SMS/voice, additional integrations) may require third-party accounts or are listed as planned

Kuvasz is suitable for teams and self-hosted deployments that need a modern uptime/SSL monitor with observability integrations. Its API, exporters, and status pages make it a practical choice for replacing hosted uptime services in environments that can run Docker and PostgreSQL.